Hair straightening apparatus



FIG. 1 is a perspective view from above to the left and to the front of the hair straightening apparatus, which is the subject of my new design;

FIG. 2 is a perspective view from above, to the left and to the rear of the hair straightening apparatus;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a right side elevational view thereof;

FIG. 7 is a front elevational view thereof; and,

FIG. 8 is a rear elevational view thereof.

In the drawings, the portions shown in dotted lines form no part of the claimed design. 

CLAIM The ornamental design for hair straightening apparatus, as shown and described. 